The existing rail-type terminal block and frame-type screw connection technology is used, and a circuit composed of electronic components is added to realize the transmission coupling of the photoelectric process.
The core of automatic control is that the control unit must be reliably isolated from the sensors and actuators to avoid interference, and to ensure that the field signal matches the low voltage required by the electronic control device. It can also be used for process control peripheral equipment and control signals. It is an interface component between the regulator and the device, and is suitable for different voltage and power ranges.
Optical isolation terminals have the advantages of low control terminal signal loss, high switching frequency, no mechanical contact jitter, no wear switching, high insulation voltage, no fear of vibration, no positional influence, and long life. Therefore, they are widely used in the field of automatic control.
